Description : What type of rectifier is constructed by sandwiching a section of semiconductor material between two metal plates?
Last Answer : Metallic rectifier.
Description : What is the purpose of the rectifier in a magnetic amplifier?
Last Answer : The rectifier eliminates hysteresis loss.
Description : What is the purpose of a rectifier in a meter?
Last Answer : A rectifier changes alternating current to pulsating direct current and allows a dc meter to measure ac.
Description : What is the purpose of the regulator section?
Last Answer : To maintain a constant voltage to the load.
Description : What is the purpose of the filter section?
Last Answer : To change pulsating dc to pure dc.
Description : If a half-wave rectifier is added to a half-wave voltage doubler, the resulting circuit is a voltage ___
Last Answer : Trippler.
Description : Is a full-wave rectifier output easier to filter than that of a half-wave rectifier?
Last Answer : Yes.
Description : What main advantage does a bridge rectifier have over a conventional full-wave rectifier?
Last Answer : The bridge rectifier can produce twice the voltage with the same size transformer.
Description : What is the main disadvantage of a conventional full-wave rectifier?
Last Answer : Peak voltage is half that of the half-wave rectifier.
Description : What is the average voltage (Eavg) Output of a full-wave rectifier with an output of 100 volts peak?
Last Answer : 63.7 volts.
Description : What is the ripple frequency of a full-wave rectifier with an input frequency of 60 Hz?
Last Answer : 120 hertz.
Description : What was the major factor that led to the development of the full-wave rectifier?
Last Answer : The fact that the full-wave rectifier uses the full output, both half cycles, of the transformer.
Description : If the output of a half-wave rectifier is 50-volts peak, what is the average voltage
Last Answer : 15.9 volts.
Description : What is the name of the simplest type of rectifier which uses one diode?
Last Answer : The half-wave rectifier.
Description : What is the output of a half-wave rectifier?
Last Answer : A pulsating dc voltage.
Last Answer : The bridge rectifier can produce double the voltage with the same size transformer.
Description : What is the main disadvantage of the conventional full wave rectifier?
Last Answer : The peak voltage is half that of a half-wave rectifier.
Description : What is the average voltage (Eavg) output of a full-wave rectifier that has an output of 100 volts peak?
Last Answer : 63.6 volts.
Description : What is the equation for determining average voltage in a half-wave rectifier?
Last Answer : Eavg = 0.318 × Emax
Description : What is the Ripple frequency of a half-wave rectifier if the input frequency is 60 Hz?
Last Answer : 60 hertz.
Description : For a diode to act as a rectifier, should it be connected in series or parallel with the load?
Last Answer : Series.
Description : Does a rectifier tube conduct on the positive or negative alternation of the input signal?
Last Answer : Positive.
Description : List three meter movements that can measure either ac or dc without the use of a rectifier.
Last Answer : Electrodynamic, moving vane, and hot-wire or thermocouple.
Description : Component 'B' of section 'I' shown in the illustration represents a _____________. EL-0093 A. bridge rectifier B. selsyn motor C. small generator D. shielded lamp
Last Answer : Answer: C
Description : Section II of the circuit shown in the illustration is the ____________. EL-0085 A. voltage regulator B. filter C. rectifier D. voltage transformer
Description : Section IV of the circuit shown in the illustration is the _____________. EL-0085 A. voltage regulator B. filter C. rectifier D. voltage transformer
Last Answer : Answer: A
Description : Section III of the circuit shown in the illustration is a _____________. EL-0085 A. voltage regulator B. filter C. rectifier D. voltage transformer
Last Answer : Answer: B
Description : In the illustrated circuit, section II is considered to be a _______. EL-0085 A. full wave rectifier B. half wave rectifier C. quarter wave rectifier D. short wave rectifier
Description : List three items of information normally included in the general description section of a specification sheet for a transistor.
Last Answer : The kind of transistor, the transistor's common applications, and mechanical data
Description : In the NPN transistor, what section is made very thin compared with the other two sections?
Last Answer : The P or base section.
Description : What type of PN diode is formed by using a fine metal wire and a section of N-type semiconductor material?
Last Answer : Point-contact.
Description : Which RC network provides better frequency stability, three-section or four-section?
Last Answer : Four-section.
Description : . In the arithmetic/logic section, data is returned to what section after processing?
Last Answer : Internal storage.
Description : What capability allows the arithmetic/logic section to test various conditions encountered during processing and take action based on the result?
Last Answer : Logic.
Description : What are the four major types of instructions in the control section?
Last Answer : Transfer, arithmetic, logic, and control.
Description : The control section can be compared to what?
Last Answer : A telephone exchange.
Description : What minimum/maximum voltage level can be attained in the pulse generator section by adjusting the LEVEL control?
Last Answer : 0 to 5 volts.
Description : What circuit section is required in the output of a multivibrator modulator to eliminate unwanted output frequencies?
Last Answer : An LCR filter.
Description : What is the purpose of a lacing shuttle?
Last Answer : To keep the tape or cord from fouling during the lacing operation.
Description : Besides presenting a neat appearance and supporting each other, what is the other purpose for lacing conductors?
Last Answer : To aid in tracing the conductors when alterations or repairs are required.
Description : What is the purpose of a heat shunt?
Last Answer : To prevent damage to heat-sensitive components.
Description : What purpose does flux serve in the soldering process?
Last Answer : It cleans the metal by removing the oxide layer and prevents further oxidation during the soldering
Description : Hybrid rings are used primarily for what purpose?
Last Answer : High-power duplexes.
Description : What is the purpose of the absorbent material in a directional coupler?
Last Answer : Absorb the energy not directed at the pick-up probe and a portion of the overall energy
Description : What is the primary purpose of a directional coupler?
Last Answer : Sampling energy within a waveguide.
Description : What is the primary purpose of a dummy load?
Last Answer : Absorb all energy without producing standing waves.
Description : What is the purpose of D1 in figure 4-43?
Last Answer : To provide a quick discharge path for C1
Description : What is the purpose of C3?
Last Answer : C3 provides neutralization for Q1.